CN108031722B

CN108031722B - One-to-four aluminum profile small round tube hot extrusion die

Info

Publication number: CN108031722B
Application number: CN201711239514.2A
Authority: CN
Inventors: 刘世茂
Original assignee: Jiangsu Jiangshun Precision Technology Group Co Ltd
Current assignee: Jiangsu Jiangshun Precision Technology Group Co.,Ltd.
Priority date: 2017-11-30
Filing date: 2017-11-30
Publication date: 2020-02-21
Anticipated expiration: 2037-11-30
Also published as: CN108031722A

Abstract

The invention discloses a hot extrusion die for a four-aluminum section small round tube, which comprises an upper die and a lower die, wherein the upper die is provided with four shunting bridges, shunting holes are formed between the shunting bridges, and small tool heads are arranged on the shunting bridges; and a welding chamber is arranged on the lower die, a die hole is arranged in the welding chamber, the die hole corresponds to the small tool bit in a one-to-one mode, and an outlet blank cutter and a discharge hole are sequentially arranged at the bottom of the die hole. The extrusion die has the advantages that the structure is stable, the extrusion ratio of the die is in a reasonable range through one die and four dies, the extrusion force is reduced, the service life of the die is prolonged, the production efficiency is improved, and the cost is reduced.

Description

One-to-four aluminum profile small round tube hot extrusion die

Technical Field

The invention relates to a hot extrusion die, in particular to a hot extrusion die for producing four aluminum profile small round tubes, and belongs to the technical field of aluminum alloy industrial material dies.

Background

The aluminum alloy has low density, high strength, good plasticity, good extrusion formability, excellent electrical conductivity, thermal conductivity and corrosion resistance, and is safe and recyclable, so that the aluminum alloy is widely applied to the technical fields of buildings, automobiles, ships, aerospace and the like. However, in the aspect of hollow aluminum alloy sections with light weight per meter and small size, the following technical difficulties exist: firstly, because the section bar is light in weight and large in extrusion ratio, the extrusion force is large, the production difficulty is large, a die is easy to damage, the yield is low, and the cost for producing the product is high; secondly, because the section bar is small in size and hollow, the tool bit on the die for producing the section bar is very small, and during production, the small tool bit is easy to be unstable and generates deflection, so that the wall thickness of the produced material is uneven, and the product is unqualified. The method only needs to be based on the design of the die to extrude qualified products, reduce the cost and improve the production efficiency.

Disclosure of Invention

The invention aims to overcome the two difficulties, provides a hot extrusion die for producing four aluminum profile small round tubes, can produce qualified products and efficiently produce light-meter heavy aluminum alloy small round tubes,

according to the technical scheme, the hot extrusion die for the four-aluminum-profile small round tube comprises an upper die and a lower die, wherein the upper die is provided with four shunting bridges, shunting holes are formed between the shunting bridges, and small tool heads are arranged on the shunting bridges; and a welding chamber is arranged on the lower die, a die hole is arranged in the welding chamber, the die hole corresponds to the small tool bit in a one-to-one mode, and an outlet blank cutter and a discharge hole are sequentially arranged at the bottom of the die hole.

Further, go up the mould center and be equipped with false worker head, the reposition of redundant personnel bridge is around false worker head setting, and the reposition of redundant personnel bridge between little worker head and the false worker head is raised and is formed and raise the bridge position.

Furthermore, the height of the false tool head is consistent with the depth of the lower die welding chamber.

Furthermore, the upper die and the lower die are fixedly connected through pins and screws.

Furthermore, the size of the shunting holes is the same, and the thickness and the height of the shunting bridge are the same.

Compared with the prior art, the invention has the advantages that: the structure is stable, the extrusion ratio of the die is in a reasonable range through one die and four dies, the extrusion force is reduced, the service life of the die is prolonged, the production efficiency is improved, and the cost is reduced; the four shunting holes are the same in size, and the four shunting bridges are the same in thickness and height, so that the pressure balance of the small tool heads on the two sides of the bridge positions is ensured; the bridge position of a shunt bridge between the small tool head and the dummy tool head is raised, so that the small tool head and the dummy tool head are connected together, the suspension height of the small tool head is reduced, and the small tool head is prevented from deflecting outwards; the four die holes share one welding chamber, and the die holes are not separated, so that the pressure in the welding chamber is uniform, and the phenomenon that the small tool head deflects due to pressure difference is avoided.

Drawings

Fig. 1 is a schematic view of the upper mold structure of the present invention.

Fig. 2 is a view of a-a fold in fig. 1.

Fig. 3 is a sectional view taken along the plane B-B in fig. 1.

FIG. 4 is a schematic view of the lower mold structure of the present invention.

Fig. 5 is a view of the fold C-C in fig. 4.

FIG. 6 is a schematic view of the structure of the present invention.

Fig. 7 is a view taken from the plane D-D of fig. 6.

Description of reference numerals: 1-shunt hole, 2-shunt bridge, 3-small tool head, 4-false tool head, 5-lifting bridge position, 6-pin hole and 7-screw hole.

Detailed Description

The invention is further illustrated by the following examples and figures.

As shown in the figure: a hot extrusion die for a four-aluminum section small round tube comprises an upper die and a lower die which are overlapped in front and back. The upper die is provided with four shunting bridges 2, shunting holes 1 are formed between the shunting bridges 2, and small tool heads 3 are arranged on the shunting bridges 2. The four shunting holes 1 are the same in size, the four shunting bridges 2 are the same in thickness and height, and pressure of the small tool heads 2 on two sides of the bridge positions of the shunting bridges 2 is balanced. The top of the shunt bridge 2 is narrower and the bottom is wider. The lower die is provided with a welding chamber 8, die holes 9 are arranged in the welding chamber 8, the die holes 9 correspond to the small tool heads 3 one by one, and the bottom of the die holes 9 is sequentially provided with an outlet blank 10 and a discharge hole 11. The four die holes 9 share one welding chamber 8, and the die holes 9 are not separated, so that the pressure in the welding chamber 8 is uniform, and the phenomenon that the small tool head 3 deflects due to pressure difference is avoided. Be equipped with false worker head 4 at last mould center, the degree of depth unanimous of the height of false worker head 4 and lower mould seam room 8, and reposition of redundant personnel bridge 2 sets up around false worker head 4, and the reposition of redundant personnel bridge 2 between little worker head 3 and the false worker head 4 is raised and is formed and raise bridge position 5, makes little worker head 3 and false worker head 4 link together, reduces little worker head 3's unsettled height, prevents that little worker head 3 from to the outside beat. The upper die and the lower die are provided with corresponding pin holes 6 and screw holes 7, and the upper die and the lower die are fixedly connected through pins and screws.

The extrusion die has a stable structure, the extrusion ratio of the die is in a reasonable range by one die and four dies, the extrusion force is reduced, the service life of the die is prolonged, the production efficiency is improved, and the cost is reduced.

Claims

1. The hot extrusion die for the four-aluminum section small round tube comprises an upper die and a lower die, and is characterized in that the upper die is provided with four shunting bridges (2), shunting holes (1) are formed between the shunting bridges (2), and small tool heads (3) are arranged on the shunting bridges (2); a welding chamber (8) is arranged on the lower die, die holes (9) are formed in the welding chamber (8), the die holes (9) correspond to the small tool heads (3) one by one, and an outlet blank (10) and a discharge hole (11) are sequentially arranged at the bottom of the die holes (9); go up the mould center and be equipped with false worker head (4), reposition of redundant personnel bridge (2) are around false worker head (4) setting, and reposition of redundant personnel bridge (2) between little worker head (3) and false worker head (4) are raised and are formed and raise bridge position (5).

2. The hot extrusion die for the four-aluminum section small round tube is characterized in that the height of the dummy head (4) is consistent with the depth of the lower die welding chamber (8).

3. The hot extrusion die for producing the small round tubes of the four-aluminum profile according to claim 1, wherein the upper die and the lower die are fixedly connected through pins and screws.

4. The hot extrusion die for the four-aluminum section small round tube is characterized in that the size of the shunting holes (1) is the same, and the thickness and the height of the shunting bridges (2) are the same.